With a soft tape, measure around your hairline: front → behind one ear → nape → behind the other ear → back to front. Snug, not tight.
| Measurement | Cap size |
|---|---|
| under 21.5" | Small |
| 21.5" – 23" | Average — what most units are built on |
| above 23" | Large |
These bands are what our caps are built to. Every style page repeats the circumference, front-to-nape and ear-to-ear figures so you can check before ordering.
Every unit is built on a 22.0 in / 56 cm circumference cap — 14.5 in front-to-nape and 12.5 in ear-to-ear — with adjustable straps at the nape that take it from 21.5 to 23.0 in (54.5–58.5 cm). Glueless styles use the same cap with a wide elastic band instead of straps. If you measure above 23 in, email us before ordering and we will tell you honestly whether it will sit comfortably on you.
| Length | Where it falls |
|---|---|
| 8"–12" | Chin to jaw — bob territory |
| 14" | Collarbone |
| 16"–18" | Top of the chest |
| 20"–22" | Below the chest |
| 24"–26" | Waist |
| 28"–32" | Hip — consider the higher density so ends don't look thin |
Lengths are measured crown to ends, not from the hairline. A 22" unit looks considerably longer on someone 5'2" than on someone 5'9" — which is why our fit notes always reference height.